8425091667049 has 2 divisors, whose sum is σ = 8425091667050. Its totient is φ = 8425091667048.

The previous prime is 8425091667029. The next prime is 8425091667053. The reversal of 8425091667049 is 9407661905248.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8002494161424 + 422597505625 = 2828868^2 + 650075^2 .

It is a cyclic number.

It is not a de Polignac number, because 8425091667049 - 2²⁹ = 8424554796137 is a prime.

It is not a weakly prime, because it can be changed into another prime (8425091667029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4212545833524 + 4212545833525.

It is an arithmetic number, because the mean of its divisors is an integer number (4212545833525).

Almost surely, 2^{8425091667049} is an apocalyptic number.

It is an amenable number.

8425091667049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8425091667049 is an equidigital number, since it uses as much as digits as its factorization.

8425091667049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 8425091667049 in words is "eight trillion, four hundred twenty-five billion, ninety-one million, six hundred sixty-seven thousand, forty-nine".